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Škrlec I, Talapko J, Džijan S, Cesar V, Lazić N, Lepeduš H. The Association between Circadian Clock Gene Polymorphisms and Metabolic Syndrome: A Systematic Review and Meta-Analysis. Biology (Basel) 2021; 11:biology11010020. [PMID: 35053018 PMCID: PMC8773381 DOI: 10.3390/biology11010020] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/11/2021] [Accepted: 12/22/2021] [Indexed: 02/07/2023]
Abstract
Metabolic syndrome (MetS) is a combination of cardiovascular risk factors associated with type 2 diabetes, obesity, and cardiovascular diseases. The circadian clock gene polymorphisms are very likely to participate in metabolic syndrome genesis and development. However, research findings of the association between circadian rhythm gene polymorphisms and MetS and its comorbidities are not consistent. In this study, a review of the association of circadian clock gene polymorphisms with overall MetS risk was performed. In addition, a meta-analysis was performed to clarify the association between circadian clock gene polymorphisms and MetS susceptibility based on available data. The PubMed and Scopus databases were searched for studies reporting the association between circadian rhythm gene polymorphisms (ARNTL, BMAL1, CLOCK, CRY, PER, NPAS2, REV-ERBα, REV-ERBβ, and RORα) and MetS, and its comorbidities diabetes, obesity, and hypertension. Thirteen independent studies were analyzed with 17,381 subjects in total. The results revealed that the BMAL1 rs7950226 polymorphism was associated with an increased risk of MetS in the overall population. In contrast, the CLOCK rs1801260 and rs6850524 polymorphisms were not associated with MetS. This study suggests that some circadian rhythm gene polymorphisms might be associated with MetS in different populations and potentially used as predictive biomarkers for MetS.
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Affiliation(s)
- Ivana Škrlec
- Faculty of Dental Medicine and Health Osijek, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia; (J.T.); (S.D.); (V.C.); (N.L.); (H.L.)
- Correspondence:
| | - Jasminka Talapko
- Faculty of Dental Medicine and Health Osijek, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia; (J.T.); (S.D.); (V.C.); (N.L.); (H.L.)
| | - Snježana Džijan
- Faculty of Dental Medicine and Health Osijek, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia; (J.T.); (S.D.); (V.C.); (N.L.); (H.L.)
- Genos Ltd., DNA Laboratory, 10000 Zagreb, Croatia
| | - Vera Cesar
- Faculty of Dental Medicine and Health Osijek, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia; (J.T.); (S.D.); (V.C.); (N.L.); (H.L.)
- Department of Biology, Josip Juraj Strossmayer University of Osijek, Ul. Cara Hadrijana 8/A, 31000 Osijek, Croatia
| | - Nikolina Lazić
- Faculty of Dental Medicine and Health Osijek, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia; (J.T.); (S.D.); (V.C.); (N.L.); (H.L.)
| | - Hrvoje Lepeduš
- Faculty of Dental Medicine and Health Osijek, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia; (J.T.); (S.D.); (V.C.); (N.L.); (H.L.)
- Faculty of Humanities and Social Sciences Osijek, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia
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Vojta L, Tomašić Paić A, Horvat L, Rac A, Lepeduš H, Fulgosi H. Complex lumenal immunophilin AtCYP38 influences thylakoid remodelling in Arabidopsis thaliana. J Plant Physiol 2019; 243:153048. [PMID: 31639536 DOI: 10.1016/j.jplph.2019.153048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 07/11/2019] [Accepted: 08/03/2019] [Indexed: 05/20/2023]
Abstract
Investigations of the luminal immunophilin AtCYP38 (cyclophilin 38) in Arabidopsis thaliana (At), the orthologue of the complex immunophilin TLP40 from Spinacia oleracea, revealed its involvement in photosystem II (PSII) repair and assembly, biogenesis of PSII complex, and cellular signalling. However, the main physiological roles of AtCYP38 and TLP40 are related to regulation of thylakoid PP2A-type phosphatase involved in PSII core protein dephosphorylation, and chaperone function during protein folding. Here we further investigate physiological roles of AtCYP38 and analyse the ultrastructure of chloroplasts from cyp38-2 plants. Transmission electron microscopy followed by quantitative micrography revealed modifications in thylakoid stacking. We also confirm that the depletion of AtCYP38 influences PSII performance, which leads to stunted phenotype of cyp38-2 plants.
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Affiliation(s)
- Lea Vojta
- Laboratory for Molecular Plant Biology and Biotechnology, Divison of Molecular Biology, Ruđer Bošković Institute, Bijenička cesta 54, HR-10 000 Zagreb, Croatia
| | - Ana Tomašić Paić
- Laboratory for Molecular Plant Biology and Biotechnology, Divison of Molecular Biology, Ruđer Bošković Institute, Bijenička cesta 54, HR-10 000 Zagreb, Croatia
| | - Lucija Horvat
- Laboratory for Molecular Plant Biology and Biotechnology, Divison of Molecular Biology, Ruđer Bošković Institute, Bijenička cesta 54, HR-10 000 Zagreb, Croatia
| | - Anja Rac
- Laboratory for Molecular Plant Biology and Biotechnology, Divison of Molecular Biology, Ruđer Bošković Institute, Bijenička cesta 54, HR-10 000 Zagreb, Croatia
| | - Hrvoje Lepeduš
- Faculty of Humanities and Social Sciences, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia; Faculty of Dental Medicine and Health, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - Hrvoje Fulgosi
- Laboratory for Molecular Plant Biology and Biotechnology, Divison of Molecular Biology, Ruđer Bošković Institute, Bijenička cesta 54, HR-10 000 Zagreb, Croatia.
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Pavlović I, Mlinarić S, Tarkowská D, Oklestkova J, Novák O, Lepeduš H, Bok VV, Brkanac SR, Strnad M, Salopek-Sondi B. Early Brassica Crops Responses to Salinity Stress: A Comparative Analysis Between Chinese Cabbage, White Cabbage, and Kale. Front Plant Sci 2019; 10:450. [PMID: 31031786 PMCID: PMC6470637 DOI: 10.3389/fpls.2019.00450] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Accepted: 03/25/2019] [Indexed: 05/13/2023]
Abstract
Soil salinity is severely affecting crop productivity in many countries, particularly in the Mediterranean area. To evaluate early plant responses to increased salinity and characterize tolerance markers, three important Brassica crops - Chinese cabbage (Brassica rapa ssp. pekinensis), white cabbage (B. oleracea var. capitata) and kale (B. oleracea var. acephala) were subjected to short-term (24 h) salt stress by exposing them to NaCl at concentrations of 50, 100, or 200 mM. Physiological (root growth, photosynthetic performance parameters, and Na+/K+ ratio) and biochemical parameters (proline content and lipid peroxidation as indicated by malondialdehyde, MDA, levels) in the plants' roots and leaves were then measured. Photosynthetic parameters such as the total performance index PItotal (describing the overall efficiency of PSI, PSII and the intersystem electron transport chain) appeared to be the most salinity-sensitive parameter and informative stress marker. This parameter was decreased more strongly in Chinese cabbage than in white cabbage and kale. It indicated that salinity reduced the capacity of the photosynthetic system for efficient energy conversion, particularly in Chinese cabbage. In parallel with the photosynthetic impairments, the Na+/K+ ratio was highest in Chinese cabbage leaves and lowest in kale leaves while kale root is able to keep high Na+/K+ ratio without a significant increase in MDA. Thus Na+/K+ ratio, high in root and low in leaves accompanying with low MDA level is an informative marker of salinity tolerance. The crops' tolerance was positively correlated with levels of the stress hormone abscisic acid (ABA) and negatively correlated with levels of jasmonic acid (JA), and jasmonoyl-L-isoleucine (JA-Ile). Furthermore, salinity induced contrasting changes in levels of the growth-promoting hormones brassinosteroids (BRs). The crop's tolerance was positively correlated with levels of BR precursor typhasterol while negatively with the active BR brassinolide. Principal Component Analysis revealed correlations in observed changes in phytohormones, biochemical, and physiological parameters. Overall, the results show that kale is the most tolerant of the three species and Chinese cabbage the most sensitive to salt stress, and provide holistic indications of the spectrum of tolerance mechanisms involved.
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Affiliation(s)
- Iva Pavlović
- Department of Molecular Biology, Ruđer Bošković Institute, Zagreb, Croatia
- Laboratory of Growth Regulators, Institute of Experimental Botany, The Czech Academy of Sciences, Palacký University, Olomouc, Czechia
| | - Selma Mlinarić
- Department of Biology, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - Danuše Tarkowská
- Laboratory of Growth Regulators, Institute of Experimental Botany, The Czech Academy of Sciences, Palacký University, Olomouc, Czechia
| | - Jana Oklestkova
- Laboratory of Growth Regulators, Institute of Experimental Botany, The Czech Academy of Sciences, Palacký University, Olomouc, Czechia
| | - Ondřej Novák
- Laboratory of Growth Regulators, Institute of Experimental Botany, The Czech Academy of Sciences, Palacký University, Olomouc, Czechia
| | - Hrvoje Lepeduš
- Faculty of Humanities and Social Sciences, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
- Faculty of Dental Medicine and Health, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - Valerija Vujčić Bok
- Division of Botany, Department of Biology, Faculty of Science, University of Zagreb, Zagreb, Croatia
| | - Sandra Radić Brkanac
- Division of Botany, Department of Biology, Faculty of Science, University of Zagreb, Zagreb, Croatia
| | - Miroslav Strnad
- Laboratory of Growth Regulators, Institute of Experimental Botany, The Czech Academy of Sciences, Palacký University, Olomouc, Czechia
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Begović L, Abičić I, Lalić A, Lepeduš H, Cesar V, Leljak-Levanić D. Lignin synthesis and accumulation in barley cultivars differing in their resistance to lodging. Plant Physiol Biochem 2018; 133:142-148. [PMID: 30419464 DOI: 10.1016/j.plaphy.2018.10.036] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 10/24/2018] [Accepted: 10/30/2018] [Indexed: 06/09/2023]
Abstract
Since lignin greatly affects stem strength, which is an important agronomical trait, understanding the relationship between lodging resistance and lignin synthesis is important in barley breeding and selection processes. The aim of the study was to reveal the connection between physiological aspects of lignin synthesis and genetic background of barley cultivars with different lodging phenotype. Three barley cultivars Astor, Scarlett and Jaran were compared by measuring lignin, cellulose and total soluble phenolics content, phenylalanine ammonia-lyase activity (PAL) and expression of cinnamoyl-CoA reductase (CCR) and cinnamyl-alcohol dehydrogenase (CAD) in three lower internodes at flowering and grain filling stage. To assess their genetic background simple sequence repeats (SSR) markers, connected to lodging resistance and plant height, were analyzed. Compared to lodging susceptible cultivars Scarlett and Jaran, a lodging resistant cultivar Astor revealed different dynamics of lignin synthesis and deposition, showing higher PAL activity and total soluble phenolics content as well as higher expression of CCR and CAD genes in the second internode at grain filling stage. Analysis of SSR markers associated with quantitative trait loci (QTL) for lodging resistance revealed that Astor discriminates from Scarlett and Jaran by marker Bmag337 connected with elongation of the second internode. Lignification process is under a strong influence of genotype and environmental factors which determine lignin synthesis dynamics and deposition of lignin in the cell walls of barley.
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Affiliation(s)
- Lidija Begović
- Department of Biology, Josip Juraj Strossmayer University of Osijek, Ulica Cara Hadrijana 8/A, HR-31000, Osijek, Croatia.
| | - Ivan Abičić
- Agricultural Institute Osijek, Južno Predgrađe 3, HR-31000, Osijek, Croatia.
| | - Alojzije Lalić
- Agricultural Institute Osijek, Južno Predgrađe 3, HR-31000, Osijek, Croatia.
| | - Hrvoje Lepeduš
- Faculty of Humanities and Social Sciences, Josip Juraj Strossmayer University of Osijek, Lorenza Jägera 9, HR-31000, Osijek, Croatia.
| | - Vera Cesar
- Department of Biology, Josip Juraj Strossmayer University of Osijek, Ulica Cara Hadrijana 8/A, HR-31000, Osijek, Croatia.
| | - Dunja Leljak-Levanić
- Division of Molecular Biology, Faculty of Science, University of Zagreb, Horvatovac 102A, HR-10000, Zagreb, Croatia.
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Cesar V, Jozić I, Begović L, Vuković T, Mlinarić S, Lepeduš H, Borović Šunjić S, Žarković N. Cell-Type-Specific Modulation of Hydrogen Peroxide Cytotoxicity and 4-Hydroxynonenal Binding to Human Cellular Proteins In Vitro by Antioxidant Aloe vera Extract. Antioxidants (Basel) 2018; 7:antiox7100125. [PMID: 30241411 PMCID: PMC6210414 DOI: 10.3390/antiox7100125] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 09/14/2018] [Accepted: 09/17/2018] [Indexed: 12/21/2022] Open
Abstract
Although Aloe vera contains numerous bioactive components, the activity principles of widely used A. vera extracts are uncertain. Therefore, we analyzed the effects of genuine A. vera aqueous extract (AV) on human cells with respect to the effects of hydrogen peroxide (H2O2) and 4-hydroxynonenal (HNE). Fully developed A. vera leaves were harvested and analyzed for vitamin C, carotenoids, total soluble phenolic content, and antioxidant capacity. Furthermore, human cervical cancer (HeLa), human microvascular endothelial cells (HMEC), human keratinocytes (HaCat), and human osteosarcoma (HOS) cell cultures were treated with AV extract for one hour after treatment with H2O2 or HNE. The cell number and viability were determined using Trypan Blue, and endogenous reactive oxygen species (ROS) production was determined by fluorescence, while intracellular HNE–protein adducts were measured for the first time ever by genuine cell-based HNE–His ELISA. The AV extract expressed strong antioxidant capacities (1.1 mmol of Trolox eq/g fresh weight) and cell-type-specific influence on the cytotoxicity of H2O2, as well as on endogenous production of ROS and HNE–protein adducts induced by HNE treatment, while AV itself did not induce production of ROS or HNE–protein adducts at all. This study, for the first time, revealed the importance of HNE for the activity principles of AV. Since HMEC cells were the most sensitive to AV, the effects of AV on microvascular endothelia could be of particular importance for the activity principles of Aloe vera extracts.
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Affiliation(s)
- Vera Cesar
- Department of Biology, Josip Juraj Strossmyer University of Osijek, Cara Hadrijana 8/A, 31000 Osijek, Croatia.
- Faculty of Dental Medicine and Health, Josip Juraj Strossmyer University of Osijek, Cara Hadrijana 10/E, 31000 Osijek, Croatia.
| | - Iva Jozić
- Department of Biology, Josip Juraj Strossmyer University of Osijek, Cara Hadrijana 8/A, 31000 Osijek, Croatia.
| | - Lidija Begović
- Department of Biology, Josip Juraj Strossmyer University of Osijek, Cara Hadrijana 8/A, 31000 Osijek, Croatia.
| | - Tea Vuković
- Laboratory for Oxidative Stress (LabOS), Rudjer Boskovic Institute, Bijenicka 54, 10000 Zagreb, Croatia.
| | - Selma Mlinarić
- Department of Biology, Josip Juraj Strossmyer University of Osijek, Cara Hadrijana 8/A, 31000 Osijek, Croatia.
| | - Hrvoje Lepeduš
- Faculty of Dental Medicine and Health, Josip Juraj Strossmyer University of Osijek, Cara Hadrijana 10/E, 31000 Osijek, Croatia.
- Faculty of Humanities and Social Sciences, Josip Juraj Strossmyer University of Osijek, L. Jägera 9, 31000 Osijek, Croatia.
| | - Suzana Borović Šunjić
- Laboratory for Oxidative Stress (LabOS), Rudjer Boskovic Institute, Bijenicka 54, 10000 Zagreb, Croatia.
| | - Neven Žarković
- Laboratory for Oxidative Stress (LabOS), Rudjer Boskovic Institute, Bijenicka 54, 10000 Zagreb, Croatia.
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Pavlović I, Petřík I, Tarkowská D, Lepeduš H, Vujčić Bok V, Radić Brkanac S, Novák O, Salopek-Sondi B. Correlations between Phytohormones and Drought Tolerance in Selected Brassica Crops: Chinese Cabbage, White Cabbage and Kale. Int J Mol Sci 2018; 19:ijms19102866. [PMID: 30241414 PMCID: PMC6213169 DOI: 10.3390/ijms19102866] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 09/11/2018] [Accepted: 09/12/2018] [Indexed: 12/21/2022] Open
Abstract
Drought is one of the major abiotic stresses affecting the productivity of Brassica crops. To understand the role of phytohormones in drought tolerance, we subjected Chinese cabbage (B. rapa ssp. pekinensis), white cabbage (B. oleracea var. capitata), and kale (B. oleracea var. acephala) to drought and examined the stress response on the physiological, biochemical and hormonal levels. The phytohormones abscisic acid (ABA), auxin indole-3-acetic acid (IAA), brassinosteroids (BRs), cytokinins (CKs), jasmonates (JAs), and salicylic acid (SA) were analyzed by ultra-high-performance liquid chromatography–tandem mass spectrometry (UHPLC-MS/MS). Based on the physiological and biochemical markers the Chinese cabbage exhibited the lowest tolerance, followed by the white cabbage, while the kale appeared to be the most tolerant to drought. The drought tolerance of the kale correlated with increased levels of SA, ABA, IAA, CKs iP(R) and cZ(R), and typhasterol (TY), a precursor of active BRs. In contrast, the drought sensitivity of the Chinese cabbage correlated with a significant increase in ABA, JAs and the active BRs castasterol (CS) and brassinolide (BL). The moderately tolerant white cabbage, positioned between the kale and Chinese cabbage, showed more similarity in terms of the phytohormone patterns with the kale. We concluded that the drought tolerance in Brassicaceae is mostly determined by the increased endogenous levels of IAA, CKs, ABA and SA and the decreased levels of active BRs.
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Affiliation(s)
- Iva Pavlović
- Laboratory for Chemical Biology, Department of Molecular Biology, Ruđer Bošković Institute, Bijenička cesta 54, Zagreb 10000, Croatia.
| | - Ivan Petřík
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science of Palacký University & Institute of Experimental Botany of the Czech Academy of Sciences, Šlechtitelů 27, Olomouc 78371, Czech Republic.
| | - Danuše Tarkowská
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science of Palacký University & Institute of Experimental Botany of the Czech Academy of Sciences, Šlechtitelů 27, Olomouc 78371, Czech Republic.
| | - Hrvoje Lepeduš
- Faculty of Humanities and Social Sciences, and Faculty of Dental Medicine and Health, Josip Juraj Strossmayer University of Osijek, Lorenza Jägera 9, Osijek 31000, Croatia.
| | - Valerija Vujčić Bok
- Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, Zagreb 10000, Croatia.
| | - Sandra Radić Brkanac
- Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, Zagreb 10000, Croatia.
| | - Ondřej Novák
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science of Palacký University & Institute of Experimental Botany of the Czech Academy of Sciences, Šlechtitelů 27, Olomouc 78371, Czech Republic.
| | - Branka Salopek-Sondi
- Laboratory for Chemical Biology, Department of Molecular Biology, Ruđer Bošković Institute, Bijenička cesta 54, Zagreb 10000, Croatia.
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Pavlović I, Pěnčík A, Novák O, Vujčić V, Radić Brkanac S, Lepeduš H, Strnad M, Salopek-Sondi B. Short-term salt stress in Brassica rapa seedlings causes alterations in auxin metabolism. Plant Physiol Biochem 2018; 125:74-84. [PMID: 29427890 DOI: 10.1016/j.plaphy.2018.01.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 01/09/2018] [Accepted: 01/26/2018] [Indexed: 05/13/2023]
Abstract
Salinity is one of major abiotic stresses affecting Brassica crop production. Here we present investigations into the physiological, biochemical, and hormonal components of the short-term salinity stress response in Chinese cabbage seedlings, with particular emphasis on the biosynthesis and metabolism of auxin indole-3-acetic acid (IAA). Upon salinity treatments (50-200 mM NaCl) IAA level was elevated in a dose dependent manner reaching 1.6-fold increase at the most severe salt treatment in comparison to the control. IAA precursor profiling suggested that salinity activated the indole-3-acetamide and indole-3-acetaldoxime biosynthetic pathways while suppressing the indole-3-pyruvic acid pathway. Levels of the IAA catabolites 2-oxoindole-3-acetic acid and indole-3-acetic acid-aspartate increased 1.7- and 2.0-fold, respectively, under the most severe treatment, in parallel with those of IAA. Conversely, levels of the ester conjugate indole-3-acetyl-1-O-ß-d-glucose and its catabolite 2-oxoindole-3-acetyl-1-O-ß-d-glucose decreased 2.5- and 7.0-fold, respectively. The concentrations of stress hormones including jasmonic acid and jasmonoyl-isoleucine (JA and JA-Ile), salicylic acid (SA) and abscisic acid (ABA) confirmed the stress induced by salt treatment: levels of JA and JA-Ile increased strongly under the mildest treatment, ABA only increased under the most severe treatment, and SA levels decreased dose-dependently. These hormonal changes were related to the observed changes in biochemical stress markers upon salt treatments: reductions in seedling fresh weight and root growth, decreased photosynthesis rate, increased levels of reactive oxygen species, and elevated proline content and the Na+/K+ ratio. Correlations among auxin profile and biochemical stress markers were discussed based on Pearson's coefficients and principal component analysis (PCA).
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Affiliation(s)
- Iva Pavlović
- Department of Molecular Biology, Ruđer Bošković Institute, Bijenička c. 54, 10000 Zagreb, Croatia
| | - Aleš Pěnčík
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany AS CR & Faculty of Science of Palacký University, Šlechtitelů 27, CZ-78371 Olomouc, Czech Republic
| | - Ondřej Novák
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany AS CR & Faculty of Science of Palacký University, Šlechtitelů 27, CZ-78371 Olomouc, Czech Republic
| | - Valerija Vujčić
- Department of Botany, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia
| | - Sandra Radić Brkanac
- Department of Botany, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia
| | - Hrvoje Lepeduš
- Faculty of Humanities and Social Sciences, Josip Juraj Strossmayer University of Osijek, HR-31000 Osijek, Croatia
| | - Miroslav Strnad
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany AS CR & Faculty of Science of Palacký University, Šlechtitelů 27, CZ-78371 Olomouc, Czech Republic
| | - Branka Salopek-Sondi
- Department of Molecular Biology, Ruđer Bošković Institute, Bijenička c. 54, 10000 Zagreb, Croatia.
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Mlinarić S, Antunović Dunić J, Skendrović Babojelić M, Cesar V, Lepeduš H. Differential accumulation of photosynthetic proteins regulates diurnal photochemical adjustments of PSII in common fig (Ficus carica L.) leaves. J Plant Physiol 2017; 209:1-10. [PMID: 27987432 DOI: 10.1016/j.jplph.2016.12.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 12/05/2016] [Accepted: 12/07/2016] [Indexed: 05/27/2023]
Abstract
Molecular processes involved in photosystem II adaptation of woody species to diurnal changes in light and temperature conditions are still not well understood. Regarding this, here we investigated differences between young and mature leaves of common fig (Ficus carica L.) in photosynthetic performance as well as accumulation of the main photosynthetic proteins: light harvesting complex II, D1 protein and Rubisco large subunit. Investigated leaf types revealed different adjustment mechanisms to keep effective photosynthesis. Rather stable diurnal accumulation of light harvesting complex II in mature leaves enabled efficient excitation energy utilization (negative L-band) what triggered faster D1 protein degradation at high light. However, after photoinhibition, greater accumulation of D1 during the night enabled them faster recovery. So, the most photosynthetic parameters, as the maximum quantum yield for primary photochemistry, electron transport and overall photosynthetic efficiency in mature leaves successfully restored to their initial values at 1a.m. Reduced connectivity of light harvesting complexes II to its reaction centers (positive L-band) in young leaves increased dissipation of excess light causing less pressure to D1 and its slower degradation. Decreased electron transport in young leaves, due to reduced transfer beyond primary acceptor QA- most probably additionally induced degradation of Rubisco large subunit what consequently led to the stronger decrease of overall photosynthetic efficiency in young leaves at noon.
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Affiliation(s)
- Selma Mlinarić
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia.
| | - Jasenka Antunović Dunić
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia.
| | | | - Vera Cesar
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia.
| | - Hrvoje Lepeduš
- Faculty of Humanities and Social Sciences, Josip Juraj Strossmayer University of Osijek, L. Jägera 9, HR-31000 Osijek, Croatia.
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Vidaković-Cifrek Ž, Tkalec M, Šikić S, Tolić S, Lepeduš H, Pevalek-Kozlina B. Growth and photosynthetic responses of Lemna minor L. exposed to cadmium in combination with zinc or copper. Arh Hig Rada Toksikol 2017; 66:141-52. [PMID: 26110476 DOI: 10.1515/aiht-2015-66-2618] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2015] [Accepted: 05/01/2015] [Indexed: 11/15/2022] Open
Abstract
Metals have a variety of negative outcomes on plants, essential components of any ecosystem. The effects of CdCl2 (5 μmol L-1), ZnCl2 (25 or 50 μmol L-1), and CuCl2 (2.5 or 5 μmol L-1) and combinations of CdCl2 with either ZnCl2 or CuCl2 on the growth, photosynthetic pigments, and photosystem II (PSII) efficiency of duckweed (Lemna minor L.) were investigated. All of the treatments caused growth inhibition and remarkable metal accumulation in plant tissue after 4 and 7 days. In the combined treatments, the accumulation of each metal applied was lesser in comparison to treatments with single metals. After 4 days, all of the treatments generally diminished chlorophyll a content and decreased the maximum quantum yield (Fv/Fm) and effective quantum yield (ΔF/F'm) of PSII. However, after 7 days of exposure to a combination of Cd and Zn, pigment content and PSII activity recovered to control levels. A higher concentration of Cu (5 μmol L-1) as well as Cd in combination with Cu had a prolonged inhibitory effect on photosynthetic features. Our results suggest that growth inhibition was due to the toxic effect of absolute metal quantity in plant tissue. Zn counteracted Cd uptake, as seen from the recovery of pigment content and PSII efficiency in plants exposed for 7 days to the Cd and Zn combination. Cu-induced oxidative stress led to a prolonged inhibitory effect in plants treated both with a higher concentration of Cu (5 μmol L-1) and simultaneously with Cd and Cu. Our findings could contribute to general knowledge on anthropogenic and environmental contaminants that endanger plant communities and significantly disrupt the sensitive balance of an ecosystem by influencing photosynthetic mechanisms.
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Begović L, Mlinarić S, Antunović Dunić J, Katanić Z, Lončarić Z, Lepeduš H, Cesar V. Response of Lemna minor L. to short-term cobalt exposure: The effect on photosynthetic electron transport chain and induction of oxidative damage. Aquat Toxicol 2016; 175:117-26. [PMID: 27015565 DOI: 10.1016/j.aquatox.2016.03.009] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Revised: 03/03/2016] [Accepted: 03/08/2016] [Indexed: 05/06/2023]
Abstract
The effect of two concentrations of cobalt (Co(2+)) on photosynthetic activity and antioxidative response in Lemna minor L. were assessed 24, 48 and 72h after the start of the exposure. Higher concentration of cobalt (1mM) induced growth inhibition while lower concentration (0.01mM) increased photosynthetic pigments content. Analysis of chlorophyll a fluorescence transients revealed high sensitivity of photosystem II primary photochemistry to excess of Co(2+) especially at the higher concentration where decreased electron transport beyond primary quinone acceptor QA(-) and impaired function of oxygen evolving complex (OEC) was observed. Due to impairment of OEC, oxygen production was decreased at higher Co(2+) concentration. Activity of superoxide dismutase was mainly inhibited while lipid peroxidation increased, at both concentrations, indicating that cobalt-induced oxidative damage after short exposure and moreover, susceptibility of the membranes in the cell to cobalt toxicity. Results obtained in this study suggest possible application of used parameters as tools in assessment of early damage caused by metals.
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Affiliation(s)
- Lidija Begović
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia.
| | - Selma Mlinarić
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia.
| | - Jasenka Antunović Dunić
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia.
| | - Zorana Katanić
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia.
| | - Zdenko Lončarić
- Faculty of Agriculture, Josip Juraj Strossmayer University of Osijek, Ulica kralja Petra Svačića 1d, HR-31000 Osijek, Croatia.
| | - Hrvoje Lepeduš
- Faculty of Humanities and Social Sciences, Josip Juraj Strossmayer University of Osijek, Lorenza Jägera 9, HR-31000 Osijek, Croatia.
| | - Vera Cesar
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia.
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Vojta L, Carić D, Cesar V, Antunović Dunić J, Lepeduš H, Kveder M, Fulgosi H. TROL-FNR interaction reveals alternative pathways of electron partitioning in photosynthesis. Sci Rep 2015; 5:10085. [PMID: 26041075 PMCID: PMC4455228 DOI: 10.1038/srep10085] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 03/27/2015] [Indexed: 01/14/2023] Open
Abstract
In photosynthesis, final electron transfer from ferredoxin to NADP(+) is accomplished by the flavo enzyme ferredoxin:NADP(+) oxidoreductase (FNR). FNR is recruited to thylakoid membranes via integral membrane thylakoid rhodanase-like protein TROL. We address the fate of electrons downstream of photosystem I when TROL is absent. We have employed electron paramagnetic resonance (EPR) spectroscopy to study free radical formation and electron partitioning in TROL-depleted chloroplasts. DMPO was used to detect superoxide anion (O2(.-)) formation, while the generation of other free radicals was monitored by Tiron. Chloroplasts from trol plants pre-acclimated to different light conditions consistently exhibited diminished O2(.-) accumulation. Generation of other radical forms was elevated in trol chloroplasts in all tested conditions, except for the plants pre-acclimated to high-light. Remarkably, dark- and growth light-acclimated trol chloroplasts were resilient to O2(.-) generation induced by methyl-viologen. We propose that the dynamic binding and release of FNR from TROL can control the flow of photosynthetic electrons prior to activation of the pseudo-cyclic electron transfer pathway.
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Affiliation(s)
- Lea Vojta
- Division of Molecular Biology, Ruđer Bošković Institute, 10000 Zagreb, Croatia
| | - Dejana Carić
- Division of Physical Chemistry, Ruđer Bošković Institute, 10000 Zagreb, Croatia
| | - Vera Cesar
- Department of Biology, JJ Strossmayer University of Osijek, 31000 Osijek, Croatia
| | | | | | - Marina Kveder
- Division of Physical Chemistry, Ruđer Bošković Institute, 10000 Zagreb, Croatia
| | - Hrvoje Fulgosi
- Division of Molecular Biology, Ruđer Bošković Institute, 10000 Zagreb, Croatia
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Šimić D, Lepeduš H, Jurković V, Antunović J, Cesar V. Quantitative genetic analysis of chlorophyll a fluorescence parameters in maize in the field environments. J Integr Plant Biol 2014; 56:695-708. [PMID: 24521148 DOI: 10.1111/jipb.12179] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Accepted: 02/11/2014] [Indexed: 06/03/2023]
Abstract
Chlorophyll fluorescence transient from initial to maximum fluorescence ("P" step) throughout two intermediate steps ("J" and "I") (JIP-test) is considered a reliable early quantitative indicator of stress in plants. The JIP-test is particularly useful for crop plants when applied in variable field environments. The aim of the present study was to conduct a quantitative trait loci (QTL) analysis for nine JIP-test parameters in maize during flowering in four field environments differing in weather conditions. QTL analysis and identification of putative candidate genes might help to explain the genetic relationship between photosynthesis and different field scenarios in maize plants. The JIP-test parameters were analyzed in the intermated B73 × Mo17 (IBM) maize population of 205 recombinant inbred lines. A set of 2,178 molecular markers across the whole maize genome was used for QTL analysis revealing 10 significant QTLs for seven JIP-test parameters, of which five were co-localized when combined over the four environments indicating polygenic inheritance and pleiotropy. Our results demonstrate that QTL analysis of chlorophyll fluorescence parameters was capable of detecting one pleiotropic locus on chromosome 7, coinciding with the gene gst23 that may be associated with efficient photosynthesis under different field scenarios.
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Affiliation(s)
- Domagoj Šimić
- Agricultural Institute Osijek, HR-31103, Osijek, Croatia
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Abstract
Olive is one of the most important cultivated Mediterranean plants. In order to determine the differences in frost resistance of two, two-year-old olive cultivars (Olea europaea cv. Leccino and cv. Oblica) growing on different types of nutrient substrates (soil and coconut fibres), the trees were exposed to low temperature (-5 °C) in the dark. It was shown that low temperature caused an increase in H2O2 concentration, level of lipid peroxidation and carbonyl protein content in both cultivars and on both nutrient substrates, respectively. The CAT and APX activities significantly varied depending on the cultivar, the nutrient substrate type and the time of exposure to low temperature. Cv. Oblica and cv. Leccino growing on coconut fibres showed a better antioxidative response to low temperature probably due to the higher nitrogen and phosphorus concentration established in this type of nutrient substrate. That positive antioxidative response determined on coconut fibres was more pronounced in leaves of cv. Leccino.
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Affiliation(s)
- Tanja Žuna Pfeiffer
- University of J. J. Strossmayer in Osijek Department of Biology Cara Hadrijana 8/A HR-31000 Osijek Croatia
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Katanić Z, Atić L, Ferhatović D, Cesar V, Lepeduš H. PSII photochemistry in vegetative buds and needles of Norway spruce (Picea abies L. Karst.) probed by OJIP chlorophyll a fluorescence measurement. Acta Biol Hung 2012; 63:218-30. [PMID: 22695521 DOI: 10.1556/abiol.63.2012.2.5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Vegetative buds represent developmental stage of Norway spruce (Picea abies L. Karst.) needles where chloroplast biogenesis and photosynthetic activity begin. We used the analyses of polyphasic chlorophyll a fluorescence rise (OJIP) to compare photosystem II (PSII) functioning in vegetative buds and fully photosynthetically active mature current-year needles. Considerably decreased performance index (PIABS) in vegetative buds compared to needles pointed to their low photosynthetic efficiency. Maximum quantum yield of PSII (Fv/Fm) in buds was slightly decreased but above limited value for functionality indicating that primary photochemistry of PSII is not holdback of vegetative buds photosynthetic activity. The most significant difference observed between investigated developmental stages was accumulation of reduced primary quinine acceptor of PSII (QA-) in vegetative buds, as a result of its limited re-oxidation by passing electrons to secondary quinone acceptor, QB. We suggest that reduced electron transfer from QA- to QB could be the major limiting factor of photosynthesis in vegetative buds.
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Affiliation(s)
- Zorana Katanić
- Department of Biology, University of J. J. Strossmayer in Osijek, Trg Lj. Gaja 6, HR-31 000 Osijek Croatia
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Lepeduš H, Gaća V, Viljevac M, Kovač S, Fulgosi H, Simić D, Jurković V, Cesar V. Changes in photosynthetic performance and antioxidative strategies during maturation of Norway maple (Acer platanoides L.) leaves. Plant Physiol Biochem 2011; 49:368-376. [PMID: 21334907 DOI: 10.1016/j.plaphy.2010.12.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2009] [Revised: 11/24/2010] [Accepted: 12/11/2010] [Indexed: 05/30/2023]
Abstract
Different structural and functional changes take place during leaf development. Since some of them are highly connected to oxidative metabolism, regulation of reactive oxygen species (ROS) abundance is required. Most of the reactive oxygen species ROS in plant cells are produced in chloroplasts as a result of highly energetic reactions of photosynthesis. The aim of our study was to examine the changes in concentration of oxidative stress parameters (TBARS - thiobarbituric acid-reacting substances and protein carbonyls) as well as antioxidative strategies during development of maple (Acer platanoides L.) leaves in the light of their enhanced photosynthetic performance. We reveal that biogenesis of the photosynthetic apparatus during maple leaf maturation corresponded with oxidative damage of lipids, but not proteins. In addition, antioxidative responses in young leaves differed from that in older leaves. Young leaves had high values of non-photochemical quenching (NPQ) and catalase (CAT, EC 1.11.1.6) activity which declined during the maturation process. Developing leaves were characterized by an increase in TBARS level, the content of non-enzymatic antioxidants as well as ascorbate peroxidase activity (APX, EC 1.11.1.11), while the content of protein carbonyls decreased with leaf maturation. Fully developed leaves had the highest lipid peroxidation level accompanied by a maximum in ascorbic acid content and superoxide dismutase activity (SOD, EC1.15.1.1). These observations imply completely different antioxidative strategies during leaf maturation enabling them to perform their basic function.
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Leljak-Levanić D, Ježić M, Cesar V, Ludwig-Müller J, Lepeduš H, Mladinić M, Katić M, Curković-Perica M. Biochemical and epigenetic changes in phytoplasma-recovered periwinkle after indole-3-butyric acid treatment. J Appl Microbiol 2010; 109:2069-78. [PMID: 20796083 DOI: 10.1111/j.1365-2672.2010.04837.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIM To elucidate the possible mechanism of phytoplasma elimination from periwinkle shoots caused by indole-3-butyric acid (IBA) treatment. METHODS AND RESULTS It has been shown that a transfer of in vitro-grown phytoplasma-infected Catharanthus roseus (periwinkle) plantlets from medium supplemented with 6-benzylaminopurine (BA) to one supplemented with IBA can induce remission of symptoms and even permanent elimination of 'Candidatus Phytoplasma asteris' reference strain HYDB. Endogenous auxin levels and general methylation levels in noninfected periwinkles, periwinkles infected with two 'Candidatus Phytoplasma' species and phytoplasma-recovered periwinkles were measured and compared. After the transfer from cytokinin- to auxin-containing media, healthy shoots maintained their phenotype, methylation levels and hormone concentrations. Phytoplasma infection caused a change in the endogenous indole-3-acetic acid to IBA ratio in periwinkle shoots infected with two 'Candidatus Phytoplasma' species, but general methylation was significantly changed only in shoots infected with 'Ca. P. asteris', which resulted in the only phytoplasma species eliminated from shoots after transfer to IBA-containing medium. Both phytoplasma infection and treatment with plant growth regulators influenced callose deposition in phloem tissue, concentrations of photosynthetic pigments and soluble proteins, H(2) O(2) levels and activities of catalase (CAT) and ascorbate peroxidase (APX). CONCLUSION Lower level of host genome methylation in 'Ca. P. asteris'-infected periwinkles on medium supplemented with BA was significantly elevated after IBA treatment, while IBA treatment had no effect on cytosine methylation in periwinkles infected with 'Candidatus Phytoplasma ulmi' strain EY-C. SIGNIFICANCE AND IMPACT OF THE STUDY Hormone-dependent recovery is a distinct phenomenon from natural recovery. As opposed to spontaneously recovered plants in which elevated peroxide levels and differential expression of peroxide-related enzymes were observed, in hormone-dependent recovery changes in global host genome, methylation coincide with the presence/absence of phytoplasma.
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Affiliation(s)
- D Leljak-Levanić
- Division of Biology, Department of Molecular Biology, University of Zagreb, Faculty of Science, Zagreb, Croatia
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Cesar V, Lepeduš H, Has-Schön E. Total soluble proteins amount in vegetative buds and needles of norway spruce during the bursting time. ACTA ACUST UNITED AC 2001. [DOI: 10.1556/abot.43.2001.3-4.6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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